The McWilliams Center for Cosmology at Carnegie Mellon University joins research efforts in astrophysics, particle physics, computer science, statistics, and other disciplines to unravel the mysteries of the universe. More than 95 percent of the universe is composed of dark matter and dark energy. Dark matter plays a key role in the formation of large scale structure of the universe, and dark energy is responsible for its accelerating expansion. The Center supports the multidisciplinary quest of faculty and students to understand the makeup of the universe and how it evolved to its current state.